<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索和添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!-- 模板 作用域插槽 scope.row 为当前行的所有数据 -->
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChange(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="showSetRoleDialog(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClose"
    >
      <!-- 对话框主体 -->
      <el-form
        :model="addForm"
        :rules="formRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 对话框底部按钮 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户信息对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClose"
    >
      <el-form
        :model="editForm"
        :rules="formRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%"
      @close="setRoleDialogClose"
    >
      <div>
        <p>当前用户：{{ userInfo.username }}</p>
        <p>当前角色：{{ userInfo.role_name }}</p>
        <p>
          分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="setRoleInfo"
          >确 定</el-button
        >
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      //验证邮箱正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
      if (regEmail.test(value)) {
        //合法的邮箱
        return cb();
      }
      cb(new Error("请输入合法的邮箱"));
    };
    //验证手机号规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(1[3|5-9])\d{9}$/;
      if (regMobile.test(value)) {
        //合法手机号
        return cb();
      }
      cb(new Error("请输入合法的手机号"));
    };

    return {
      userList: [],
      total: 0,
      queryInfo: {
        query: "",
        //当前页码
        pagenum: 1,
        //每页显示多少条
        pagesize: 2
      },
      //添加用户对话框显示
      addDialogVisible: false,
      //添加用户表单数据
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: ""
      },
      //表单输入验证
      formRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度为3~10个字符",
            trigger: "blur"
          }
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          { min: 6, max: 15, message: "密码长度为6~15个字符", trigger: "blur" }
        ],
        email: [
          { required: true, message: "请输入邮箱", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" }
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" }
        ]
      },
      //控制修改用户信息对话框
      editDialogVisible: false,
      //编辑用户信息
      editForm: {},
      //控制分配角色对话框
      setRoleDialogVisible: false,
      //需要被分配权限的用户信息
      userInfo: {},
      //所有角色列表
      rolesList: [],
      //已选中的角色id值
      selectedRoleId: ''
    };
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo
      });
      if (res.meta.status !== 200) {
        return this.$message.error("获取用户列表失败");
      }
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    //监听pagesize改变
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUserList();
    },
    //监听页码值改变
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUserList();
    },
    //监听用户状态改变
    async userStateChange(userInfo) {
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state;
        return this.$message.error("更新状态失败");
      }
      this.$message.success("更新状态成功");
    },
    //监听对话框关闭事件
    addDialogClose() {
      this.$refs.addFormRef.resetFields();
    },
    //点击按钮，添加用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return;
        //可以发起添加用户请求
        const { data: res } = await this.$http.post("users", this.addForm);
        if (res.meta.status !== 201) {
          return this.$message.error("添加用户失败");
        }
        this.$message.success("添加用户成功");
        //关闭对话框
        this.addDialogVisible = false;
        this.getUserList();
      });
    },
    //打开编辑用户信息对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("查询用户失败");
      }
      this.editForm = res.data;
      this.editDialogVisible = true;
    },
    //监听修改对话框关闭
    editDialogClose() {
      this.$refs.editFormRef.resetFields();
    },
    //修改用户信息表单验证并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return;
        //发送修改用户信息请求
        const { data: res } = await this.$http.put(
          "users/" + this.editForm.id,
          { email: this.editForm.email, mobile: this.editForm.mobile }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("更新用户信息失败");
        }
        //更新成功
        //关闭对话框
        this.editDialogVisible = false;
        //刷新用户列表
        this.getUserList();
        this.$message.success("更新用户信息成功");
      });
    },
    //根据id删除用户信息
    async removeUserById(id) {
      const confirmResutl = await this.$confirm(
        "此操作将永久删除该用户信息, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);

      //点击确定，返回confirm，点取消返回cancle并且会报错，所以用catch捕获
      if (confirmResutl !== "confirm") {
        return this.$message.info("已取消删除");
      }

      const { data: res } = await this.$http.delete("users/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("删除失败");
      }
      this.$message.success("删除用户成功");
      this.getUserList();
    },
    //打开分配角色对话框
    async showSetRoleDialog(userInfo) {
      //保存当前角色信息
      this.userInfo = userInfo;
      //获取所有角色列表
      const { data: res } = await this.$http.get("roles");
      if (res.meta.status !== 200) {
        return this.$message.error("获取角色列表失败");
      }
      this.rolesList = res.data;
      this.setRoleDialogVisible = true;
    },
    //点击确定，分配角色
    async setRoleInfo() {
      if(!this.selectedRoleId) {
        return this.$message.error("请选择角色");
      }
      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId});
      if (res.meta.status !== 200) {
        return this.$message.error("更新角色失败");
      }
      this.$message.success("更新角色成功");
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    //监听分配角色对话框关闭
    setRoleDialogClose() {
      //重置选中的角色id和当前用户
      this.selectedRoleId = '';
      this.userInfo = {};
    }
  }
};
</script>

<style lang="less" scoped>
</style>